7. februar 2011, 17:13
There is a common perception that weight and mass are basically the same thing. This video aims to tease out the difference between mass and weight by......
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OpslagstavleQueenmalou K33  Tilbagetil2006 M34  mia10 K33  flosk M36  Laura2010 K15  Spoton M50  oOPetrichorOo K37  Djnissen91 M34  Niko1990 K35  Tuggie M34  |